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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/form_field_history_manager.h"
#include <vector>
#include "base/string_util.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/pref_service.h"
#include "webkit/glue/form_field_values.h"
// Limit on the number of suggestions to appear in the pop-up menu under an
// text input element in a form.
static const int kMaxAutofillMenuItems = 6;
// static
void FormFieldHistoryManager::RegisterUserPrefs(PrefService* prefs) {
prefs->RegisterBooleanPref(prefs::kFormAutofillEnabled, true);
}
FormFieldHistoryManager::FormFieldHistoryManager(TabContents* tab_contents)
: tab_contents_(tab_contents),
pending_query_handle_(0),
query_id_(0) {
form_autofill_enabled_.Init(prefs::kFormAutofillEnabled,
profile()->GetPrefs(), NULL);
}
FormFieldHistoryManager::~FormFieldHistoryManager() {
CancelPendingQuery();
}
void FormFieldHistoryManager::CancelPendingQuery() {
if (pending_query_handle_) {
SendSuggestions(NULL);
WebDataService* web_data_service =
profile()->GetWebDataService(Profile::EXPLICIT_ACCESS);
if (!web_data_service) {
NOTREACHED();
return;
}
web_data_service->CancelRequest(pending_query_handle_);
}
pending_query_handle_ = 0;
}
Profile* FormFieldHistoryManager::profile() {
return tab_contents_->profile();
}
void FormFieldHistoryManager::FormFieldValuesSubmitted(
const webkit_glue::FormFieldValues& form) {
StoreFormEntriesInWebDatabase(form);
}
bool FormFieldHistoryManager::GetFormFieldHistorySuggestions(int query_id,
const string16& name,
const string16& prefix) {
if (!*form_autofill_enabled_)
return false;
WebDataService* web_data_service =
profile()->GetWebDataService(Profile::EXPLICIT_ACCESS);
if (!web_data_service) {
NOTREACHED();
return false;
}
CancelPendingQuery();
query_id_ = query_id;
pending_query_handle_ = web_data_service->GetFormValuesForElementName(
name, prefix, kMaxAutofillMenuItems, this);
return true;
}
void FormFieldHistoryManager::RemoveFormFieldHistoryEntry(const string16& name,
const string16& value) {
WebDataService* web_data_service =
profile()->GetWebDataService(Profile::EXPLICIT_ACCESS);
if (!web_data_service) {
NOTREACHED();
return;
}
web_data_service->RemoveFormValueForElementName(name, value);
}
void FormFieldHistoryManager::OnWebDataServiceRequestDone(
WebDataService::Handle h,
const WDTypedResult* result) {
DCHECK(pending_query_handle_);
pending_query_handle_ = 0;
if (*form_autofill_enabled_) {
DCHECK(result);
SendSuggestions(result);
} else {
SendSuggestions(NULL);
}
}
void FormFieldHistoryManager::StoreFormEntriesInWebDatabase(
const webkit_glue::FormFieldValues& form) {
if (!*form_autofill_enabled_)
return;
if (profile()->IsOffTheRecord())
return;
profile()->GetWebDataService(Profile::EXPLICIT_ACCESS)->
AddFormFieldValues(form.elements);
}
void FormFieldHistoryManager::SendSuggestions(const WDTypedResult* result) {
RenderViewHost* host = tab_contents_->render_view_host();
if (!host)
return;
if (result) {
DCHECK(result->GetType() == AUTOFILL_VALUE_RESULT);
const WDResult<std::vector<string16> >* autofill_result =
static_cast<const WDResult<std::vector<string16> >*>(result);
host->FormFieldHistorySuggestionsReturned(
query_id_, autofill_result->GetValue(), -1);
} else {
host->FormFieldHistorySuggestionsReturned(
query_id_, std::vector<string16>(), -1);
}
}
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